Issue 10, 2016

Study on the preparation of PAM/MMT W/W emulsion and its application as a flocculant

Abstract

In this study, the polyacrylamide/montmorillonite water in water (WPAMt) emulsion was prepared through dispersion polymerization in ammonium sulfate (AS) aqueous solution using gelatin as stabilizer. The copolymer was prepared from acrylamide (AM) and diallyl dimethyl ammonium chloride (DMDAAC). Organic montmorillonite (OMMT), prepared by intercalation of AM into the interlayers of sodium montmorillonite (Na-MMT), was added into the system to form a “cross-linking” structure in which PAM molecules were grafted onto MMT. The polymerization was initiated by ammonium persulfate (APS) and sodium hydrogen sulfite (SHS). The droplet formation of the WPAMt emulsion was observed through an optical microscope. The particle size and distribution of the WPAMt emulsion was measured by dynamic light scattering (DLS), and the particle size ranged from 2 to 6 μm. Besides, the influence of various polymerization parameters including OMMT dosage, gelatin concentration, pH value, DMDAAC concentration, and initiator concentration on the apparent viscosity and flocculation ability of the WPAMt emulsion was also investigated.

Graphical abstract: Study on the preparation of PAM/MMT W/W emulsion and its application as a flocculant

Article information

Article type
Paper
Submitted
01 Dec 2015
Accepted
11 Jan 2016
First published
14 Jan 2016

RSC Adv., 2016,6, 7908-7913

Author version available

Study on the preparation of PAM/MMT W/W emulsion and its application as a flocculant

J. Qiu, H. Wang, S. Dong, H. Wang, X. Cheng and Z. Du, RSC Adv., 2016, 6, 7908 DOI: 10.1039/C5RA25546E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements